Q: Why there is more than one battery or part? Standard Vs Extended
Don't Be confused with the Volts, Wattage, number of cells or Capacity 4400mah etc. It may vary.
However all of these parts are guaranteed to work with your laptop and you can use any one of the unit. Just check either your part number (printed on battery label) or laptop model number listed on this page.
Normally, The Laptop comes with standard size battery, this means your original battery is standard size battery.
If you need standard size battery for Laptop, just choose the battery which is 6 cell or 5800mah , 5200mah, 4800mah, or 4400mah and it is same size as your standard battery.
6 cell or 8 cell same size as standard battery
5800mah same size as standard battery
5200mah same size as standard battery
4800mah same size as standard battery
4400mah same size as standard battery
4200mah same size as standard battery
4000mah same size as standard battery

Extended size Battery
6600mah, 7200mah or more.

Q: Laptop Battery Capacity 4400mah, 5200mah or etc: What is mah and 6 cell or 9 cell ? and if it is different than the original battery capacity i.e 4800mah, 5800mah, 8800mah etc?
Will it still fit and work in my computer?

"Milliamps Hour (mah)" and "number of cells" is the strength or capacity of Lithium Ion Rechargeable battery. The higher the mAh, the longer the battery will last, means more discharge time. Batteries with different mAh ratings are interchangeable.
Battery capacity, Volts or no of cells can be different ie 4400mah, 4800mah, 5200mab, 6600mah or similar like this.
It will still fit and work in your computer without any problem. Higher or Extended capacity works for longer time(run time/discharge time)
Only Some of the longer capacity batteries like 9 cell 7200mah or more are bigger in size but they will still
work in your computer. Some of these batteries like 9 cell or more sticks out and protrude out the (bottom/side) of the laptop and may cause your laptop to sit at an angle. But It is better for Laptop as it create good air circulation and does not cause CPU to become. But our item for 451-10478 works fine.

Q: Description looks very short, Will this part or battery for 451-10478 fit my computer?
A: The part or battery is guaranteed to work with your laptop when you see your part's OEM part number (printed on battery label) or laptop model number on this page. The list might be incomplete because it is difficult to collect all information at one time. If you are not sure of your choice, please write details in comments box while ordering or contact us(click to contact) or call us 714-257-0711. We will ship you the correct battery based on your order.

+Package includes part for 451-10478 comes in a box, brand new and in unused condition.
+Charge and check part for 451-10478 before use. Also charge and discharge at least once a month.
+High Capacity 451-10478 's item may gets a little hot while in use, therefore place your laptop in a well ventilated place and to keep it cool.
+Our Products are assembled and manufactured by high-capacity power products and built-in 451-10478 rechargeable battery protection circuit.
+Most of our items 451-10478 are shipped from our warehouse in California.
+Our Product for 451-10478 comes with money back guarantee.
+All Information about this product 451-10478 are subject to change without prior notice. All designated brands including 451-10478, trademarks, and model names are property of their respective owners.